Gymnic's hop ball is the very best quality in hopping balls! made from the Super strong, yet soft latex-free vinyl material for long lasting use and durability. Great exercise product for indoors and smooth safe outdoor surfaces. Promotes children's body coordination, balance, lymph circulation and provides a fun work out while hopping on the ball. Special patented handgrip safety handle. Maximum sustainable weight up to 200 lbs based on the size of the ball. Inflate with a hand or foot pump.